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Fix absolute mouse positioning on SDL renderer

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This commit is contained in:
Cameron Gutman 2020-04-24 19:37:15 -07:00
parent ab2bb51879
commit 8cf7f3ac08
1 changed files with 13 additions and 3 deletions
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16
app/streaming/video/ffmpeg-renderers/sdlvid.cpp
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@ -1,6 +1,7 @@
#include "sdlvid.h"
#include "streaming/session.h"
#include "streaming/streamutils.h"
#include "path.h"
#include <QDir>
@ -176,9 +177,18 @@ bool SdlRenderer::initialize(PDECODER_PARAMETERS params)
return false;
}
// The window may be smaller than the stream size, so ensure our
// logical rendering surface size is equal to the stream size
SDL_RenderSetLogicalSize(m_Renderer, params->width, params->height);
// Calculate the video region size, scaling to fill the window while
// preserving the aspect ratio of the video stream.
SDL_Rect src, dst;
src.x = src.y = 0;
src.w = params->width;
src.h = params->height;
dst.x = dst.y = 0;
SDL_GetWindowSize(params->window, &dst.w, &dst.h);
StreamUtils::scaleSourceToDestinationSurface(&src, &dst);
// Ensure the viewport is set to the desired video region
SDL_RenderSetViewport(m_Renderer, &dst);
// Draw a black frame until the video stream starts rendering
SDL_SetRenderDrawColor(m_Renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);